144 lines
3.1 KiB
PHP
144 lines
3.1 KiB
PHP
<?php
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/**
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* @file src/Core/Cache.php
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*/
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namespace Friendica\Core;
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use Friendica\Factory\CacheDriverFactory;
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/**
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* @brief Class for storing data for a short time
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*/
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class Cache extends \Friendica\BaseObject
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{
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const MONTH = 2592000;
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const WEEK = 604800;
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const DAY = 86400;
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const HOUR = 3600;
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const HALF_HOUR = 1800;
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const QUARTER_HOUR = 900;
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const FIVE_MINUTES = 300;
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const MINUTE = 60;
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const INFINITE = 0;
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/**
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* @var Cache\ICacheDriver
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*/
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private static $driver = null;
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public static $driver_class = null;
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public static $driver_name = null;
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public static function init()
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{
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self::$driver_name = Config::get('system', 'cache_driver', 'database');
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self::$driver = CacheDriverFactory::create(self::$driver_name);
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self::$driver_class = get_class(self::$driver);
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}
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/**
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* Returns the current cache driver
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*
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* @return Cache\ICacheDriver
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*/
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private static function getDriver()
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{
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if (self::$driver === null) {
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self::init();
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}
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return self::$driver;
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}
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/**
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* @brief Returns all the cache keys sorted alphabetically
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*
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* @param string $prefix Prefix of the keys (optional)
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*
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* @return array Empty if the driver doesn't support this feature
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* @throws \Exception
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*/
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public static function getAllKeys($prefix = null)
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{
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$time = microtime(true);
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$return = self::getDriver()->getAllKeys($prefix);
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self::getApp()->getProfiler()->saveTimestamp($time, 'cache', System::callstack());
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return $return;
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}
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/**
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* @brief Fetch cached data according to the key
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*
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* @param string $key The key to the cached data
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*
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* @return mixed Cached $value or "null" if not found
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* @throws \Exception
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*/
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public static function get($key)
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{
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$time = microtime(true);
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$return = self::getDriver()->get($key);
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self::getApp()->getProfiler()->saveTimestamp($time, 'cache', System::callstack());
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return $return;
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}
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/**
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* @brief Put data in the cache according to the key
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*
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* The input $value can have multiple formats.
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*
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* @param string $key The key to the cached data
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* @param mixed $value The value that is about to be stored
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* @param integer $duration The cache lifespan
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*
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* @return bool
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* @throws \Exception
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*/
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public static function set($key, $value, $duration = self::MONTH)
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{
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$time = microtime(true);
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$return = self::getDriver()->set($key, $value, $duration);
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self::getApp()->getProfiler()->saveTimestamp($time, 'cache_write', System::callstack());
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return $return;
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}
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/**
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* @brief Delete a value from the cache
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*
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* @param string $key The key to the cached data
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*
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* @return bool
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* @throws \Exception
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*/
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public static function delete($key)
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{
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$time = microtime(true);
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$return = self::getDriver()->delete($key);
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self::getApp()->getProfiler()->saveTimestamp($time, 'cache_write', System::callstack());
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return $return;
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}
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/**
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* @brief Remove outdated data from the cache
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*
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* @param boolean $outdated just remove outdated values
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*
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* @return bool
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*/
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public static function clear($outdated = true)
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{
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return self::getDriver()->clear($outdated);
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}
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}
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